How to Get the Result Back

A function can return a result back to the place where it was called.

function sum(a, b) {
  return a + b;
}

let result = sum(1, 2);
alert(result); // 3

Rules for return

• The return statement instantly terminates function execution. Code below it will not run.
• You can use return without a value just to exit the function.
• If there is no return, the function returns undefined.